Home / 54,191.11-81,278.28-20,906.32

Finding the Fourth Proportional to 54,191.11, 81,278.28 and 20,906.32

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Solution

The fourth proportional to 54,191.11, 81,278.28 and 20,906.32 is: 31,356.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,191.11 : 81,278.28 = 20,906.32 : x
  2. Step 2: Convert to fraction form
    54,191.11/81,278.28 = 20,906.32/x
  3. Step 3: Cross multiply
    54,191.11x = 81,278.28 × 20,906.32
  4. Step 4: Simplify right side
    54,191.11x = 1,699,229,730.73
  5. Step 5: Solve for x
    x = 1,699,229,730.73/54,191.11
  6. Step 6: Final answer
    x = 31,356.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.